MEDICINE
RADIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Radiolucent
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Radiopaque
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Either A or B
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None of the above
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Detailed explanation-1: -In a periapical radiograph, the enamel, which is the hardest substance in the human body, appears as the most radiopaque (lightest) part of the crown of the tooth. The dentin is a less-mineralized hard structure of the tooth between the enamel and the pulp and is not as radiopaque as the enamel.
Detailed explanation-2: -The nasal septum is a radiopaque landmark visible on maxillary central incisor periapical images. Anterior nasal spine – The anterior nasal spine (ANS) is a bony projection located at the base of the nasal septum in the maxillary midline. Radiographically, the ANS appears as a V-shaped or triangular point radiopacity.
Detailed explanation-3: -Maxillary sinus: The border of maxillary sinus appears as a thin radiopaque line ( thin layer of cortical bone). Sometimes we can see thin folds of cortical bone project a few millimeters from the wall of the sinus or may extend across the sinus, these are named septa.